PHP分页类的使用
jopen
10年前
PHP分页类的使用
page.class.php
<?php class Page { private $total_rows;//数据库总条数 private $per_page_rows;//每页显示条数 private $limit; private $uri; private $total_pages;//总页数 private $config=array("header"=>"记录条数","prev"=>"上一页","next"=>"下一页","first"=>"首 页","last"=>"尾 页"); private $list_length=8; public function __construct($total_rows,$per_page_rows=10,$url_args){ $this->total_rows=$total_rows; $this->per_page_rows=$per_page_rows; $this->uri=$this->get_uri($url_args); $this->page = !empty($_GET['page']) ? $_GET['page'] : 1; $this->total_pages=ceil($this->total_rows/$this->per_page_rows); $this->limit=$this->set_limit(); } private function set_limit() { return "limit ".($this->page-1)*$this->per_page_rows.",{$this->per_page_rows}"; } private function get_uri($url_args) { $url=$_SERVER["REQUEST_URI"].(strpos($_SERVER["REQUEST_URI"],"?") ? "" : "?").$url_args; $parse=parse_url($url); if (isset($parse['query'])) { parse_str($parse['query'],$params);//把url字符串解析为数组 unset($params['page']);//删除数组下标为page的值 $url=$parse['path'].'?'.http_build_query($params);//再次构建url } return $url; } public function __get($args) { if ($args=="limit") { return $this->limit; }else{ return null; } } private function start_page(){ if ($this->total_rows==0) { return 0; }else{ return (($this->page-1)*$this->per_page_rows)+1; } } private function end_page(){ return min($this->page*$this->per_page_rows,$this->total_rows); } private function go_first() { $html=""; if ($this->page==1) { $html.=" {$this->config['first']} "; }else{ $html.=" <a href='{$this->uri}&page=1'>{$this->config['first']}</a> "; } return $html; } private function go_prev() { $html=""; if ($this->page==1) { $html.=" {$this->config['prev']} "; }else{ $html.=" <a href='{$this->uri}&page={$this->page}-1'>{$this->config['prev']}</a> "; } return $html; } private function go_next() { $html=""; if ($this->page==$this->total_pages) { $html.=" {$this->config['next']} "; }else{ $html.=" <a href='{$this->uri}&page={$this->page}+1'>{$this->config['next']}</a> "; } return $html; } private function go_last() { $html=""; if ($this->page==$this->total_pages) { $html.=" {$this->config['last']} "; }else{ $html.=" <a href='{$this->uri}&page={$this->total_pages}'>{$this->config['last']}</a> "; } return $html; } private function go_page() { return ' <input type="text" onkeydown="javascript:if(event.keyCode==13){var page=(this.value>'.$this->total_pages.')?'.$this->total_pages.':this.value;location=\''.$this->uri.'&page=\'+page+\'\'}" value="'.$this->page.'" style="width:25px;" /><input type="button" onclick="javascript:var page=(this.previousSibling.value>'.$this->total_pages.')?'.$this->total_pages.':this.previousSibling.value;location=\''.$this->uri.'&page=\'+page+\'\'" value="GO" /> '; } private function page_list() { $link_page=""; $i_num=floor($this->list_length/2); for ($i = $i_num; $i >= 1; $i--) { $page=$this->page-$i; if ($page<1) { continue; }else{ $link_page.=" <a href='{$this->uri}&page={$page}'>{$page}</a> "; } } $link_page.=" {$this->page} "; for ($i = 1; $i < $i_num; $i++) { $page=$this->page+$i; if ($page<=$this->total_pages) { $link_page.=" <a href='{$this->uri}&page={$page}'>{$page}</a> "; }else{ break; } } return $link_page; } public function out_page($display=array(0,1,2,3,4,5,6,7,8)) { $display_html=''; $html[0]=" 共有<b>{$this->total_rows}</b>{$this->config['header']} "; $html[1]=" 每页显示<b>".($this->end_page()-$this->start_page()+1)."</b>条,本页显示从<b>{$this->start_page()}</b>--<b>{$this->end_page()}</b>{$this->config['header']} "; $html[2]=" <b>{$this->page}</b>/<b>{$this->total_pages}</b>页 "; $html[3]=$this->go_first(); $html[4]=$this->go_prev(); $html[5]=$this->page_list(); $html[6]=$this->go_next(); $html[7]=$this->go_last(); $html[8]=$this->go_page(); foreach ($display as $index){ $display_html.=$html[$index]; } return $display_html; } } ?> page_demo.php
<?php header("content-type:text/html;charset=utf-8"); require_once './page.class.php'; require_once '../config/config.db.php'; //数据库中的总条数:total_rows; //每一页显示的条数:per_page_rows $sql="select * from cp_sd_day"; $rt=mysql_query($sql); $total_rows=mysql_num_rows($rt); $per_page_rows=10; $page=new Page($total_rows,$per_page_rows); $sql="select * from cp_sd_day {$page->limit}"; $rt=mysql_query($sql); echo '<table width="1000" border="1">'; echo '<caption><h1>cp_sd_day</h1></caption>'; while (!!$row=mysql_fetch_assoc($rt)) { echo '<tr>'; echo '<td>'.$row['date_no'].'</td>'; echo '<td>'.$row['max_notwin'].'</td>'; echo '<td>'.$row['sum_last_miss'].'</td>'; echo '<td>'.$row['last_miss'].'</td>'; echo '<td>'.$row['last_miss_sort'].'</td>'; echo '</tr>'; } echo '<tr><td colspan="5" align="right">'.$page->out_page(array(2,3,4,5,6,7,8)).'</td></tr>'; echo '</table>'; ?>